union tree_node *));
};
+/* Lang hooks for management of language-specific data or status
+ when entering / leaving functions etc. */
+struct lang_hooks_for_functions
+{
+ /* Called when entering a function. */
+ void (*init) PARAMS ((struct function *));
+
+ /* Called when leaving a function. */
+ void (*final) PARAMS ((struct function *));
+
+ /* Called when entering a nested function. */
+ void (*enter_nested) PARAMS ((struct function *));
+
+ /* Called when leaving a nested function. */
+ void (*leave_nested) PARAMS ((struct function *));
+};
+
/* The following hooks are used by tree-dump.c. */
struct lang_hooks_for_tree_dump
{
- /* Dump language-specific parts of tree nodes. Returns non-zero if it
+ /* Dump language-specific parts of tree nodes. Returns non-zero if it
does not want the usual dumping of the second argument. */
int (*dump_tree) PARAMS ((void *, tree));
/* Return a new type (with the indicated CODE), doing whatever
language-specific processing is required. */
tree (*make_type) PARAMS ((enum tree_code));
-
+
/* Given MODE and UNSIGNEDP, return a suitable type-tree with that
mode. */
tree (*type_for_mode) PARAMS ((enum machine_mode, int));
/* Return a type the same as TYPE except unsigned or signed
according to UNSIGNEDP. */
tree (*signed_or_unsigned_type) PARAMS ((int, tree));
+
+ /* Given a type, apply default promotions to unnamed function
+ arguments and return the new type. Return the same type if no
+ change. Required by any language that supports variadic
+ arguments. The default hook aborts. */
+ tree (*type_promotes_to) PARAMS ((tree));
+
+ /* This routine is called in tree.c to print an error message for
+ invalid use of an incomplete type. VALUE is the expression that
+ was used (or 0 if that isn't known) and TYPE is the type that was
+ invalid. */
+ void (*incomplete_type_error) PARAMS ((tree value, tree type));
};
/* Language hooks related to decls and the symbol table. */
/* Returns the chain of decls so far in the current scope level. */
tree (*getdecls) PARAMS ((void));
+
+ /* Returns true when we should warn for an unused global DECL.
+ We will already have checked that it has static binding. */
+ bool (*warn_unused_global) PARAMS ((tree));
};
/* Language-specific hooks. See langhooks-def.h for defaults. */
/* Called when all command line options have been parsed. Should do
any required consistency checks, modifications etc. Complex
initialization should be left to the "init" callback, since GC
- and the identifier hashes are set up between now and then. */
+ and the identifier hashes are set up between now and then.
+
+ If errorcount is non-zero after this call the compiler exits
+ immediately and the finish hook is not called. */
void (*post_options) PARAMS ((void));
/* Called after post_options, to initialize the front end. The main
/* Called at the end of compilation, as a finalizer. */
void (*finish) PARAMS ((void));
- /* Parses the entire file. */
- void (*parse_file) PARAMS ((void));
+ /* Parses the entire file. The argument is non-zero to cause bison
+ parsers to dump debugging information during parsing. */
+ void (*parse_file) PARAMS ((int));
/* Called immediately after parsing to clear the binding stack. */
void (*clear_binding_stack) PARAMS ((void));
Fourth argument is actually an enum expand_modifier. */
rtx (*expand_expr) PARAMS ((tree, rtx, enum machine_mode, int));
+ /* Prepare expr to be an argument of a TRUTH_NOT_EXPR or other logical
+ operation.
+
+ This preparation consists of taking the ordinary representation
+ of an expression expr and producing a valid tree boolean
+ expression describing whether expr is nonzero. We could simply
+ always do build_binary_op (NE_EXPR, expr, integer_zero_node, 1),
+ but we optimize comparisons, &&, ||, and !.
+
+ The result should be an expression of boolean type (if not an
+ error_mark_node). */
+ tree (*truthvalue_conversion) PARAMS ((tree));
+
/* Possibly apply default attributes to a function (represented by
a FUNCTION_DECL). */
void (*insert_default_attributes) PARAMS ((tree));
through. The default hook returns a negative number. */
int (*unsafe_for_reeval) PARAMS ((tree));
+ /* Mark EXP saying that we need to be able to take the address of
+ it; it should not be allocated in a register. Return true if
+ successful. */
+ bool (*mark_addressable) PARAMS ((tree));
+
/* Hook called by staticp for language-specific tree codes. */
int (*staticp) PARAMS ((tree));
for the passed TARGET_EXPR. Return NULL if there is none. */
tree (*maybe_build_cleanup) PARAMS ((tree));
- /* Mark nodes held through the lang_specific hooks in the tree. */
- void (*mark_tree) PARAMS ((tree));
+ /* Set the DECL_ASSEMBLER_NAME for a node. If it is the sort of
+ thing that the assembler should talk about, set
+ DECL_ASSEMBLER_NAME to an appropriate IDENTIFIER_NODE.
+ Otherwise, set it to the ERROR_MARK_NODE to ensure that the
+ assembler does not talk about it. */
+ void (*set_decl_assembler_name) PARAMS ((tree));
/* Nonzero if TYPE_READONLY and TREE_READONLY should always be honored. */
bool honor_readonly;
void (*print_error_function) PARAMS ((struct diagnostic_context *,
const char *));
- /* Set yydebug for bison-based parsers, when -dy is given on the
- command line. By default, if the parameter is non-zero, prints a
- warning that the front end does not use such a parser. */
- void (*set_yydebug) PARAMS ((int));
+ /* Pointers to machine-independent attribute tables, for front ends
+ using attribs.c. If one is NULL, it is ignored. Respectively, a
+ table of attributes specific to the language, a table of
+ attributes common to two or more languages (to allow easy
+ sharing), and a table of attributes for checking formats. */
+ const struct attribute_spec *attribute_table;
+ const struct attribute_spec *common_attribute_table;
+ const struct attribute_spec *format_attribute_table;
+
+ /* Function-related language hooks. */
+ struct lang_hooks_for_functions function;
struct lang_hooks_for_tree_inlining tree_inlining;
-
+
struct lang_hooks_for_tree_dump tree_dump;
struct lang_hooks_for_decls decls;
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